DIRECTED FLOW IN HEAVY-ION COLLISIONS AND SOFTENING OF EQUATION OF STATE

被引：3
|
作者：
Ohnishi, A. [1 ]
Nara, Y. [2 ,3 ]
Niemi, H. [4 ]
Stoecker, H. [3 ,4 ,5 ]
机构：
[1] Kyoto Univ, YITP, Kyoto, Japan
[2] Akita Int Univ, Akita, Japan
[3] FIAS, Frankfurt, Germany
[4] Goethe Univ Frankfurt, ITP, Frankfurt, Germany
[5] GSI Helmholtzzentrum Schwerionenforsch GmbH, Darmstadt, Germany
来源：
ACTA PHYSICA POLONICA B PROCEEDINGS SUPPLEMENT | 2017年 / 10卷 / 03期
基金：
欧盟地平线“2020”;
关键词：
ELLIPTIC FLOW; DEPENDENCE;
D O I：
10.5506/APhysPolBSupp.10.699
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We analyze the directed flow of protons and pions in high-energy heavy-ion collisions in the incident energy range from root s(NN) = 7.7 to 27 GeV within a microscopic transport model. While standard hadronic transport approaches do not describe the collapse of directed flow below root s(NN) similar or equal to 20 GeV, a model that simulates effects of a softening of the equation of state by introducing the attractive orbits describes well the behavior of directed flow data. The equation of state with the attractive orbits is as soft as the one with the first-order phase transition.
引用
收藏
页码：699 / 703
页数：5
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